Parking Brake Valve Assembly; Installation Of Parking Brake Valve - Piper Navajo PA-31 Service Manual

PIPER NAVAJO SERVICE MANUAL
215
19
11 1312
19
1
10
1
VALVE BODY
11. "O" RING
2. FITTING
12. "O' RING
3.
SPRING 13. CAM
4.
VALVE
14. STUD
5. "O" RING 15. SWIVEL
6. NUT 16. LEVER
7. WASHER 17 WASHER
8. BUSHING 18. NUT
9. SPRING
19. COTTER PIN
10. "O" RING
Figure 7-18.
Parking Brake Valve Assembly
7-64. INSTALLATION OF PARKING BRAKE VALVE.
a. Attach the valve to the bulkhead mounting bracket with screws.
b. Connect the fluid lines to the valve.
c. Connect the control cable to valve lever and determine that when valve lever fits in the closed
detent, parking brake handle is .062 to .125 inch of being full in against stop.
7-65. BLEEDING PROCEDURE. If the brake line has been disconnected for any reason, it will be
necessary to bleed the brake system as described below:
a.
Place a suitable container at the brake reservoir to collect fluid overflow.
b. Remove the rubber bleeder fitting cap located on the bottom of the brake unit housing on the
landing gear.
c. Slide a hose over the bleeder fitting, loosen the fitting one turn and pressure fill the brake system
with MIL-H-5606 fluid. (Refer to Figure 7-19.)
NOTE
By watching the fluid pass through the plastic hose at the top of
the brake reservoir, it can be determined whether any air remains
in the system. If air bubbles are evident, filling of the system shall
be continued until all of the air is out of the system and a steady
flow of fluid is obtained.
d. Tighten bleeder fitting and remove the hose. Check brakes for proper pedal pressure.
e. Repeat this procedure on the other gear.
f.
Drain excess fluid from reservoir to fluid level line with a syringe.
Reissued: 10/12/79
LANDING GEAR AND BRAKE SYSTEM
2G10